Is there an Xfinity customer service email address?

I receive 2 emails per day saying that I need to confirm my cell phone number. Its the right number, its Canadian with Rogers as provider and its the only one I have. I went to a store to ask to fix it, very helpful lady (Sarcasm) told me to delete the emails when they come in... Xfinity system does not seem to be able to communicate with a Canadian cell. It should not cost Xfinity more to TXT to me and my package with Rogers is borderless unlimited so it won't cost me anything either.  Please can someone fix it and stop these annoying emails from coming twice a day. Dont want to block Xfinity, I am a client and I pay my bills.